CO2 rises by 10% under NEDC correlated values.

The latest cap hpi research indicates that emissions data under NEDC correlated values show a rise of 10% in CO2 emissions across all sectors.

This study of over 600 models across all vehicle sectors examined emissions data between September 2017 and May 2018. The data shows diesel vehicles increased by 12.6%, petrol 7.3%, petrol/plug-in hybrid by 27.3% and petrol hybrid 7.8%

NEDC correlated values are derived from WLTP testing but converted back to an NEDC figure and do not include optional equipment. WLTP in its true form will come into circulation from Sept 2018, but there will be no fiscal impact to tax until April 2020.

Andrew Mee, senior forecasting editor (UK) at cap hpi said: “The industry is already seeing the impact of WLTP as some models are removed from the market and options are rationalised. While we expect to see the fleet mix change over the coming months with drivers shifting away from models with large CO2 and BIK increases, we don’t expect to see a significant spike in overall sales ahead of WLTP changes in September.”

The WLTP legislation aims to provide customers with a more detailed view of how a vehicle performs concerning mpg and CO2. The previous NEDC test cycle does not take optional equipment into account and doesn’t offer an accurate representation of driving styles which affect the emissions produced by a vehicle.

We continue to work with many areas of the industry by integrating the additional data needed to handle the expected changes that will come from the new WLTP and RDE emissions tests. The additional information will be available in the company’s New Vehicle Dataset (NVD) over the coming months.